122400

Appears in sequences

• Generalized class numbers c_(n,2).at n=10A000362
• Number of 2n-bead balanced binary strings, rotationally equivalent to complement, inequivalent to reverse and reversed complement.at n=17A045659
• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to complement, inequivalent to reverse and reversed complement.at n=17A045668
• Denominators of coefficients in Stirling's expansion for log(Gamma(z)).at n=7A046969
• Triangle T(n,k) = coefficient of x^n*y^k/(n!*k!) in 1/(1-x-y-x*y), read by rows in order 00, 10, 01, 20, 11, 02, ...at n=38A059446
• Triangle T(n,k) = coefficient of x^n*y^k/(n!*k!) in 1/(1-x-y-x*y), read by rows in order 00, 10, 01, 20, 11, 02, ...at n=42A059446
• Triangle read by rows: T(n,k) (n >= 2, 1<=k<=n-1) is the number of permutations p of 1,...,n with max(|p(i)-p(i-1)|, i=2..n) = k.at n=34A064482
• Numbers containing squares of Pythagorean triples in their divisor set.at n=33A096472
• Largest achievable determinant of a 4 X 4 matrix whose elements are the 16 consecutive integers n-15,...,n.at n=25A097696
• When the n-th term of this sequence is added to or subtracted from the square of the n-th prime of the form 4k + 1 (i.e., A002144(n)), the result in both cases is a square.at n=33A114200
• Twin prime averages which are also the sum of the divisors of a triangular number.at n=32A166162
• Integer areas A of integer-sided triangles such that the length of the circumradius is a prime number.at n=40A256629
• Number of permutations of n letters that contain exactly 3 distinguishable A's, 2 distinguishable B's and n-5 distinguishable other letters, where no A's are adjacent and no B's are adjacent.at n=4A266393
• Number of length-n binary strings such that no rotation is a palindrome.at n=16A337056
• Number of minimum distinguishing labelings in the cycle graph C_n.at n=14A377502
• Brent's irregular triangle T[r,k] related to Hardy-Littlewood constants of prime gaps 2r.at n=77A381083
• Column k=2 of Brent's table A381083 related to prime gaps 2n.at n=16A381085